mutter: fix crossbuild.

srcpkgs/mutter/template

@@ -5,7 +5,7 @@ revision=1
 build_style=gnu-configure
 configure_args="--disable-schemas-compile --disable-static --enable-compile-warnings=no"
 hostmakedepends="pkg-config intltool gnome-doc-utils gobject-introspection
- glib-devel"
+ glib-devel wayland-devel zenity"
 makedepends="
  gtk+3-devel startup-notification-devel libcanberra-devel
  clutter-devel gsettings-desktop-schemas-devel
@@ -19,6 +19,13 @@ license="GPL-2"
 distfiles="${GNOME_SITE}/$pkgname/${version%.*}/$pkgname-$version.tar.xz"
 checksum=ee0098487d1bfb8f28e3927fbb9df227d846555142d352f8693f56a08441c755
 
+# Package build options
+build_options="gir"
+# Disable gir for cross builds.
+if [ -z "$CROSS_BUILD" ]; then
+	build_options_default="gir"
+fi
+
 mutter-devel_package() {
 	depends="gsettings-desktop-schemas>=3.16 gtk+3-devel>=3.16
 		clutter-devel>=1.22 libX11-devel mutter>=${version}_${revision}"
@@ -27,7 +34,9 @@ mutter-devel_package() {
 		vmove usr/include
 		vmove usr/lib/pkgconfig
 		vmove usr/share/gtk-doc
-		vmove "usr/lib/mutter/*.gir"
+		if [ "$build_option_gir" ]; then
+			vmove "usr/lib/mutter/*.gir"
+		fi
 		vmove "usr/lib/*.so"
 	}
 }